High-Throughput Combinatorial Screening System for Optimized Cas9 Variants

USPTO published patent application US20260109973A1 covering a high-throughput combinatorial genetic modification system and optimized SpCas9 enzyme variants produced by that system. The application, filed August 21, 2025 under Application No. 19305828, names Alan Siu Lun Wong and Gigi Ching Gee Choi as inventors and was published on April 23, 2026. The published CPC classifications indicate the invention spans C12N gene technology domains including C12N 9/22 (nucleic acid enzymes, specifically Cas9).

Biotechnology companies and academic institutions engaged in CRISPR-based gene editing research and development should evaluate potential freedom-to-operate implications arising from this published application. The patent, once granted, would confer exclusive rights to the combinatorial screening system and optimized Cas9 variants, which could affect licensing negotiations, R&D planning, and competitive positioning in the gene-editing space.